what happen to the bleeps when you straighten your arm
no it isnt because the arm is bent by the flexor muscles (mostly just the biceps), and straightened by the extensor muscles (ie. the triceps).
The triceps muscles extend (straighten) the arm, while the biceps muscles flex (bend) it at the elbow joint.
nothing except that you straightned it...whats with these kind of questions??!!
The muscle that causes a joint to straighten when it contracts are the extensor muscles. These include the triceps that work with the biceps to extend the arm.
looking at the arms, it's the triceps and some portions of the deltoid.
i think that the upper arm is gonna be workinq but in the bottom is gonna be in rest.( Different Person) Your upper muscles, also known as the biceps, will contract, also known as swell up, while your lower muscles, also known as triceps, will relax. when you straighten your arm the muscles reverse.you are so stupid y would you even put answers out like that? man you whack
The muscles in your arm never expand; so when you bend your arm, your biceps contract as your triceps return to their regular form. When you extend your arm, you triceps contract as your biceps return to their regular form.
When you bend your arm, your biceps contract, or tighten.When you straighten your arm in a relaxed position your biceps retract.
Well remember that the musleoves the bone one way and that one way is the bent
Two muscles are needed, one to extend the other to close
it goes to the loo to have a wee